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CDR Sensing
About Technology
Long-distance gas sensing using OTDR for infrastructure inspection and monitoring in harsh environment.
CRD Sensing enables remote sensing using commercial equipment such as the Optical Time-Domain Reflectometer (OTDR), further enabling a more efficient, compact and easy handling sensing system.
Licensing Contacts
Rita Lopes
Problem
Remote sensing contributes to environmental and structural monitoring, in large areas and in harsh environments. While the cavity ring-dow (CRD) technique is not suited for satellite-based remote sensing, it may play an important role in ground-based sensing. Yet, current solutions for enabling remote sensing using the CRD technique comprise the inclusion of optical devices such as the optical circulator.
Conventional CRD configuration, is not an attractive solution for remote sensing applications, as it needs two fibre paths, one for signal transmission and the other for signal reception. This configuration, however, is not compatible with remote sensing needs, such as the portability, and the ability to operate in diverse and dynamic environments.
Solution
Long-distance gas sensing using OTDR for infrastructure inspection and monitoring in harsh environment.
Our solution is CRD Sensing a new linear optical fibre configuration that is compatible, with the development of compact and portable solutions.
CRD Sensing enables remote sensing using commercial equipment such as the Optical Time-Domain Reflectometer (OTDR), further enabling a more efficient, compact and easy handling sensing system.
Unique benefits
Adaptable -operates with any intensity-based optical fibre sensor
Compact
Compatible with OTDRs’ portability
Sensitive
Due to its linear cavity
Versatile
Ready to monitor physical and biological parameters, either in liquid or gas medium
User-friendly
Easy-handling sensing system
Innovative
Use of OTDR for sensor interrogation in a new set of scenarios
Use Cases
OTDR market: promoting an expansion of its applications
Environmental control: Sensing: CO2 measuring in mining and Oil&Gas industries
Infrastructure monitoring: Structural integrity evaluation
Technology Details
Commercial Rights
License Status
Technology Area(s)
Sensing & Imaging
Electronics & Photonics
Impact Area(s)
Scientific Publications
Ring-Down Technique Using Fiber-Based Linear Cavity for Remote Sensing